# Fileset

[IPC2023T8poster_21P119a_金済徳.pdf](https://mdr.nims.go.jp/filesets/f7a823fc-55ff-486b-bd9f-cc2ece2f27f3/download)

## Creator

[KIM, Jedeok](https://orcid.org/0000-0003-4301-1044)

## Rights

[Creative Commons BY Attribution 4.0 International](https://creativecommons.org/licenses/by/4.0/)

## Other metadata

[Sulfonation Properties of Polyphenylsulfone](https://mdr.nims.go.jp/datasets/4eae7ff6-ba33-4f98-86f0-8aeb91ed9448)

## Fulltext

IPC2023T8poster.pdfSulfonation Properties of Polyphenylsulfone  J. Kim Functional Clay Materials Group, Functional Materials Research Center,  National Institute for Materials Science (NIMS), Japan 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan Phone: +81-29-860-4764 E-mail: Kim.Jedeok@nims.go.jp  Introduction PPSU (Polyphenylsulfone) is a sulfone polymer consisting of phenylene bonded to sulfonyl (-SO2-) and ether (-O-) chains in the building blocks. Compared to commercially available high-temperature engineering resins, PPSU has superior hydrolytic stability and toughness, and is used as an advanced material in a variety of fields, including automotive, medical equipment, food service, and membrane technology1). In particular, sulfonated PPSU electrolyte materials have been actively studied as an alternative to fluorinated ion exchange resins2). In this paper, we report on the synthesis and properties of sulfonated PPSU. Results and Discussion         Figure 1 shows the chemical structure of SPPSU with two sulfonyl groups introduced per repeating unit of PPSU. Table 1 also shows the properties of PPSU sulfonated with different acid types. Sulfonation of PPSU is accomplished by aromatic nucleophilic substitution reactions, introducing a sulfonyl group into the electron-rich biphenyl group. Since the performance of the ion exchange resin depends on the ion exchange capacity of the polymer, sulfonation was performed by changing the acid type in order to introduce more sulfonyl groups into PPSU (Table 1). Although the ion exchange capacity can be increased by changing the acid type and temperature conditions, the optimum conditions are required because degradation of the polymer structure also occurs at the same time. At the conference, we will report on the sulfonation of PPSU and its properties in detail. References 1) www.solvay.com 2) Kim, J. et al. membranes 2020, 10, 31; Kim, J. et al. membranes 2021, 11, 861. Acknowledgements: This research was partially supported by the Toyota Mobility Fund’s Innovative Research Grant for Building a Hydrogen Society. 21P119aThe 13th SPSJ International Polymer Conference (IPC 2023)